A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________

A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________ Correct Answer Dimer activated on inducer binding

A trp repressor is a dimer which can’t bind to the cis element unless it is bound to the inducer tryptophan. Only then it undergoes conformational change such that it then binds to the operator.
Bissoy MCQ

Related Questions

Consider the following statements and choose the correct answer:
1. The structural genes direct the synthesis of cellular proteins through messenger RNA (mRNA)
2. The promoter gene determines whether or not the structural genes are to be repressed by the repressor
3. The regulator gene directs the synthesis of a protein which may be an active repressor or an inactive repressor
A and B jointly owe Rs. one lac to C. A alone pays the whole amount to C. B not knowing the fact of payment by A pays Rs. one lac over again to C. Is C bound to repay Rs. one lac to B.
Lac repressor dissociates from its operator when the repressor binds to ____________
In a mero-diploid you have one I- and one I+ Repressor gene in the two lac operons. I+ is wild type while I- is a mutant which produces a repressor that doesn’t bind. What would be the functionality of the diploid?
The minimum Long Run Average Cost (LAC) can be determined on a
I. LAC curve for a normal production function
II. LAC curve for a linear production function
III. Planning curve
IV. Envelope curve
Trp repressor is a ____________
The active repressor binds to the inducer molecule to form an R-I complex which results in
Which of the following acts as an inducer in the lac operon?
A recombinant protein is to be expressed under the control of the lac promoter and operator in a strain of E. coli having the genotype lacI+ crp+. Even in the absence of inducer IPTG, low levels of expression of the recombinant protein are seen (leaky expression). Which one of the following should be done to minimize such leaky expression?
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. ________________ various signs of economic slowdown such as languishing industrial production and adverse __________________of the drought on rural livelihoods and demand, the government is apparently unable ____________________ unwilling to increase public spending to _________________ peoples material distress or to kick-start economic ____________________ to increase employment.
the government is apparently unable ____________________